
\begin{table}[htb]
\caption{Robustness check: Table F1 without upper chambers}
\begin{center}
\begin{tabular}{l c c c}
\hline
 & Experiment 1 & Experiment 2 & Experiment 3 \\
\hline
Citizens                   & $1.26^{*}$      & $2.27^{*}$      & $-1.37^{*}$       \\
                           & $ [0.91; 1.62]$ & $ [1.91; 2.64]$ & $ [-1.89; -0.85]$ \\
Benefits                   &                 &                 & $4.17^{*}$        \\
                           &                 &                 & $ [ 3.68;  4.66]$ \\
Citizens $\times$ Benefits &                 &                 & $1.36^{*}$        \\
                           &                 &                 & $ [ 0.72;  2.03]$ \\
Intercept                  & $5.34^{*}$      & $3.90^{*}$      & $3.80^{*}$        \\
                           & $ [5.05; 5.62]$ & $ [3.61; 4.17]$ & $ [ 3.38;  4.25]$ \\
\hline
N                          & $772$           & $684$           & $768$             \\
\hline
\multicolumn{4}{l}{\scriptsize{\parbox{0.85\linewidth}{$^*$ Null hypothesis value outside the 95\% confidence interval. Entries are unstandardized coefficients from a linear mixed-effect regression model. Bootstrapped confidence intervals in parentheses. Countries function as groups. Support for PTAs is captured on an 11-point scale.}}}
\end{tabular}
\label{tab:tableK1}
\end{center}
\end{table}
